00818nam0-22002771i-450-99000150537040332120030527144125.0000150537FED01000150537(Aleph)000150537FED0100015053720030527d--------km-y0itay50------baengPublic health engineeringA textbook of the principles of environmental sanitation.vol. IIEarle B. PhelpsNew YorkJohn Wiley1950VII,213 p.22 cmBibl. Ing. SanitariaIGIENEPhelps,Earle B.67517ITUNINARICAUNIMARCBK99000150537040332115 F/7-20inv. n.74DINIDDINIDPublic health engineering376891UNINA